sloscheider wrote:
I guess I wrongly assumed MILFs kept the aperture open to the max until you snapped the photo just like SLR type bodies and thus didn't give a dof preview. interesting... I wonder how the focus systems work so well with a lens stopped down and not letting through much light.
I'm not against mirrorless, I suspect it is the "future" but that doesn't mean all the existing systems are junk. Electric cars are likely the future of personal transportation but for many reasons, cost for me, it's still a ways off for the mainstream.
My top priority is ergonomics, I can change pretty much any setting I would want to change with thumb/finger buttons while never taking my eye from the viewfinder. I'm shooting in conditions where I don't have the time to look at a screen and touch options I want to change - I'll loose income. Nikons new Z bodies still don't offer that from what I've seen but some day I will travel 3 hours to my nearest camera store and play with one.
I guess I wrongly assumed MILFs kept the aperture ... (
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Aside - first of all, the proper term is "EVIL" - Electronic Viewfinder Interchangeable Lens!
You might want to check out the Fuji X-T cameras - I moved from Nikon SLRs and DSLRs to because their ergonomics - placement of dials and so forth, were almost the same as the SLR styling. Without moving my eye from the viewfinder I can change aperture, shutter speed, ISO and EV compensation.
That said, EVFs are not the be-all and end-all - there is a slight but sometimes important lag between the time an event happens (the smile on a child's face, say, or a flower blowing in the breeze when trying to do macro work) as compared to the OVF in and SLR. This makes sense - after all, photons bouncing off mirrored surfaces take perhaps a few haptoseconds to reach your eye. But photons passing through a lens and hitting an imaging chip, which then must pass the raw data stream to the in-camera computer to generate a viewable image (effectively like a tiny TV studio in your camera) cannot avoud having some kind of lag.Does this matter for landscapes and still life shots? No. But indoors at a party, it definitely can be annoying to say the least. Further, the "resolution" of OVFs is essentially infinity (again, photon level) so it's easy to see DOF effects or even when a polarizing filter is positioned to maximal effect.
On the other hand, EVFs have the outstanding capability to display (on that tiny TV screen in the eyepiece, or the LCD on the back) what a properly exposed final image will look like, within reason. And if you set the EV to +2 stops, the EVF will brighten accordingly, which can be helpful. What amazed me most was using a 10 stop ND filter - on the DSLR the process, of course, would be to frame the shot on a tripod, screw on the filter, take the shot, then remove the filter in order to reframe the shot as needed (sure, you can use Zune magnetic filter holders, but it's still a PITA and they don't make those in the huge filter diameters used on the Fotodiox Wonderpana system). But with the EVF, after I put on the 10 stop filter and looked through the viewfinder, I couldn't tell the filter was there! The viewfinder displayed the scene as expected (obviously not with the motion blurring that a 30 second exposure would entail, but you get the idea).
So, yes, it is not necessary for EVIL lenses to maintain the aperture at maximum - I have a number of Rokinon and 7Artisans lenses that have zero contacts with the Fuji body and thus have no way of "knowing" when to open suddenly - when I stop them down to f16 or whatever the EVF does not change, other than to indicate the new shutter speed (if I am in Aperture priority mode).
The point is, while it is quire worthwhile to investigate, there might be some advantage to the mirrored setups, depending on your requirements.